Casey

Expert in access network, PON, GPON, etc.

The normalized representations of short-range and long-range industry chain

Advances in 400G Optical Transmission Technology

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Currently, telecommunications network faces challenges in network transformation and bandwidth enhancement. Therefore, improving the single-wave rate and transmission distance of optical transmission systems and increasing the bandwidth utilization of fiber optic communication systems have become a common pursuits of operators and equipment vendors to meet the growing demand for network traffic. The industry is currently …

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optical line terminal

EPON, GPON, 10G EPON, 10G GPON OLT: How do They Work?

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The Basic Concept of OLT OLT is optical line terminal. The PON network consists of OLT, ODN and ONU. OLT belongs to the service node side of the access network and is connected to the corresponding service node equipment through SNI interface to complete the service access of the access network. In the PON technology application, …

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feature pic

ODN Key Technologies of 10G PON and 25G PON

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By analyzing 10G PON and 25G PON technologies, the relationship between dispersion and length of ODN fiber links in high-speed PON planning and deployment is discussed, and the influence of fiber link dispersion under high-speed PON technology conditions is obtained to become an important consideration, providing a reference for the adaptation of ODN optical networks …

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Cable management

How to Manage Data Center Cabling?

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Tracking and managing data center cabling is one of the most overlooked tasks in data center management. However, if not handled properly, it can lead to a variety of problems, such as causing everything from costly downtime to inefficient use of capacity. Never compromise on “Cable spaghetti,” a complex tangle of cables from various electronic …

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50G sfp56 vs qsfp28

What is the Difference Between 50G SFP56 and QSFP28?

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Introduction With the advent of the 5th Generation Mobile Communication Technology (5G) era, the traditional 4th Generation Mobile Communication Technology (4G) base station density can no longer meet the greatly increased demand for 5G bandwidth. As of November 2021, China has built and opened 1.39 million 5G base stations, accounting for more than 60% of the …

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Application scenario of integrated access layer bearer ring

The Latest Research on Four Aspects of 100G QSFP28 and SFP112

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The fifth-generation mobile communication (5G) technology has been commercially deployed for three years and has entered a critical period of large-scale application. The carrier optical module has an important impact on the transmission performance of mobile communication networks. As the 5G construction continues to advance and the application scenarios become richer, the industry continues to …

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VLAN based on ports

VLAN: What is it and How it Work?

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What is VLAN? VLAN is Virtual Local Area Network, not “VPN” (Virtual Private Network). VLAN is an emerging data exchange technology that divides LAN devices logically (not physically) into segments to realize virtual workgroups. This emerging technology is mainly used in switches and routers, but the mainstream application is still in the switches. However, not all …

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Optical Time Domain Reflectometer

How to use OTDR?

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OTDR parameter setting Optical fiber measurement with OTDR can be divided into three steps: parameter setting, data acquisition, and curve analysis. Manually set measurement parameters include: Wavelength selection (λ): Because different wavelengths correspond to different light characteristics (including attenuation, micro-bend, etc.), the test wavelength generally follows the principle of corresponding to the transmission and communication …

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What are the Features of APC Fiber Connectors?

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Fiber optic connectors are mainly composed of two parts, take our standard SC/UPC connector to give an example. SC indicates the type of connector interface, and UPC suggests the shape of the pin end face. The connector’s interface is divided into SC, FC, LC, ST, MPO, and many other types. We commonly used in the …

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Schematic Diagram of the SFP Module

How are the Optical Transceivers Produced?

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1. Schematic Diagram of the SFP/SFP+ Optical Transceivers 2. Bill of Material 3. Components Design Ideas 4. Optical Transceivers Assembly Assembly: device pin cutting, pin soldering, device pin cutting, pin soldering, flexible tape soldering, device soldering, assembly inspection, etc. Debugging: fixed information writing, initialization, transmitting performance adjustment, receiving performance adjustment, etc. Aging: power aging or …

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